diff --git a/java/src/com/android/inputmethod/latin/RichInputConnection.java b/java/src/com/android/inputmethod/latin/RichInputConnection.java index 5e0dafa57..96bf17b5c 100644 --- a/java/src/com/android/inputmethod/latin/RichInputConnection.java +++ b/java/src/com/android/inputmethod/latin/RichInputConnection.java @@ -626,6 +626,7 @@ public final class RichInputConnection { * @return a range containing the text surrounding the cursor */ public TextRange getWordRangeAtCursor(final int[] sortedSeparators) { + final int additionalPrecedingWordsCount = 0; mIC = mParent.getCurrentInputConnection(); if (mIC == null) { return null; @@ -638,17 +639,29 @@ public final class RichInputConnection { return null; } - // Going backward, find the first breaking point (separator) + // Going backward, alternate skipping non-separators and separators until enough words + // have been read. + int count = additionalPrecedingWordsCount; int startIndexInBefore = before.length(); - while (startIndexInBefore > 0) { - final int codePoint = Character.codePointBefore(before, startIndexInBefore); - if (isSeparator(codePoint, sortedSeparators)) { - break; - } - --startIndexInBefore; - if (Character.isSupplementaryCodePoint(codePoint)) { + boolean isStoppingAtWhitespace = true; // toggles to indicate what to stop at + while (true) { // see comments below for why this is guaranteed to halt + while (startIndexInBefore > 0) { + final int codePoint = Character.codePointBefore(before, startIndexInBefore); + if (isStoppingAtWhitespace == isSeparator(codePoint, sortedSeparators)) { + break; // inner loop + } --startIndexInBefore; + if (Character.isSupplementaryCodePoint(codePoint)) { + --startIndexInBefore; + } } + // isStoppingAtWhitespace is true every other time through the loop, + // so additionalPrecedingWordsCount is guaranteed to become < 0, which + // guarantees outer loop termination + if (isStoppingAtWhitespace && (--count < 0)) { + break; // outer loop + } + isStoppingAtWhitespace = !isStoppingAtWhitespace; } // Find last word separator after the cursor